Adjustable reamer.



W. E. YORK & G. D. HAYDEN.

ADJUSTABLE BEAMER.

APPLIoATIoN FILED HAY 6, 1909.

- Patented Oct. 4,1910.

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APPLICA Patented 00E. 4,1910;

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WILLIAM E. YORK AND GEORGE D.'HAYDE1\T, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNORS TO MOR-SE TVJIST DRILL & MACllIN- OMPANY, OF NEVI BEDFORD,

MASSACHUSETTS.'

ADJUSTABLE BEAMER.

Patented ct. d, iltl.

replication inea May e, i909. serial iio 494,499.

To all whomit may concern:

Be it known thatwe, VILLIAM Yoiiir and yGrnoiieii D. HAYDEN, citizens of the United States,and residents of Neiv- Bedl ford, in the county of Bristol and State of Massachusetts, have invented anew and useful .Improvement in Adjustable Reainers, of which the following is a specification.

` Our invention relates t-o adjustable reaniers and'its object is to improve the construction of such reamers in the manner hereinafter Iset forth whereby their solidity may be increased and their gage conveniently and accurately varied.

Our invention willhbe descrvibed with reference to the drawings which accompany and form a part of this specification, in which- Figure l is a side elevation of our adjust.- able reamer, Fig. 2 is aloiigitiidinal section thereof showing particularly the manner of securing the longitudinal section of said stock, Fig. 4 is an'end'view of thereamei" shown in Fig. l, Fig. A5,is an eiidview of thestock shown in Fig. '3, Fig. 6 is a transverse section taken onA theline 6-6 of` Fig. l, Fig. 7 is a side view of one of the blades, Fig. 8v i's an end view ofthe blade shown in Fig; 7, Fig. 8a is an end view of a modified form of blade, Fig. 9 is a central section of the collar at the forward end of the reamer, Fig. 10 is a side view of the adjusting screw which coperates wi-thsaid collar, Fig. -ll is a longitudinal section of a modified form of reamer einbodying our invention, Fig. 12 is a central section of the stock shown in Fig. 11, Fig. 13

I is an end view of said stock before the vblades have been inserted therein; Fig. let is a side view of the blade used in said modilied type'. of rea'iiierj, Fig. 15 is an end view'of said blade,i and Fig. 16 is a central sectionof. the collar. at fthe` forward end of th'e reamer shown in Fig 11.

In. the drawings selected for illustrating the particular embodiments of-our invention herein disclosed, '1 represents the reamer stock which, as shown, is provided with a tapered end terminating in a tang 1"' for-'securing the same in the socket `of the machine in which it is employed. The surface of the stock is provided with a plurality of longitudinal .and radial slots 2, herein shown as -six in number, and each slot is provi-ded with a longitudinally extendingV shoulder blade 4f is located' in. eachslot and is pro.

blades to the stock, Fig. 3 is a vided with a longitudinally extending shout der 3', the said shoulders being inclined with respect to the axis of, the stock in reverse direction, so that when the shoulder on the blade rests upon the shoulder in the slot, the cutting portion of the blade isparallel with the axis of the slot. inasmuch as the blades do not extend to the bottom of the slots, it will be seen that each blade is supported vlon.gitudinally solely by the said shoulders.

F orsefcuring the blades `against longitudinal .and radial movement we employthe collar having a beveled edge copcrating with the rearward beveled edge of each blade, said.

collar being' interposed between the blade and the lock-nut t5 which is screw-threaded to the stock at the rear end thereof. The forw-ardfend of the stock is provided with a chamber 9 which is threaded to receive the screw 8,.and a washer 'i' is interposed ,beiv

tween said screw and a beveled portion on the under side of each blade near the orward endthe'reof, the washer being beveled to cooperate with said beveled portion of I each blade.

lf desired, the blade 4J having two longitudinally extending shoulders 3", 3 as shown in Fig. 8a, may be employed,iind in such case the slots will each be provided with corresponding coperating shoulders.

Villien it is desired toiincrease the gage of the reamer, the lock-nut 6 is loosened and the screw 8 is turned in such direction as to move the blades toward the rear of the reainer, for example, if the screw be a right-hand screw, it is turned to the right. Each blade then moves radially outward until the rear ends of each blade ine'et the cold lar 5 whereupon the screw is tightened and.'

the blades. locked in position. `Whenvit is desired tmdecrease the gage of the reanier, the screw is turned in the opposite direction and the lock-nut 6 turned in such direction as to 'simultaneously force the blades longitudinally forward until the beveled portion l on the under side of each blade near the forward ends thereof engages the washer 7,

'whereupon the locknutv is tightened and the blades sec'u'ied in position.

In the modification shown in Fig. 1l., the slots are provided with shoulders 10 inclined rearwardly with respect tothe axis of the stoclr, and each blade e" is provided with a correspondingl inclined shoulder 10, the

'l arrangethat when they are in engagement the cutting edge of each bladeis-parallel with the axis of the reamer. In thisv :case the washer 7.', which engages with-.the beveled portion near the forward vdgeof each-blade, may be counterboredas shown at ,12 to provide for increased ad-A justment in the gage of the reamer. The I operation of altering the gageof the reamer shown in/Figllis. exactly the reverse vof that above'described'in connection with the reamenshown in Fig. l as will be apparent.

.It will be understood that the stock may have any suitable shape and that surfaces ,of

'the portions thereof between adjacent blades may be straight as shown at 13 in Fig. 13, vor scalloped as shown at 14 in Fig. 4. y

It will be noted that the blades do not rest lupon the bottomof the slots and that there is always a space, shown at 11, between the blottomof .the blades and the top of said s ots;

One ofthe advantages of the construction hereinbefore 'described is that the forward ends of the bladesprojectbeyond the for-l ward end of the stock so thatthe reamer lIonay beemployed to the extreme depth of a ore.

It will be understood that various -modifcations vmay be made in the two embodi` ments of our inventionv herein described without departing-from the spirit thereof.

. l. In an adjustable rener, a stock provided with longitudinal and radial slots having parallel walls, each slot having a longitudinally extending rectangular ,shoulder inclined with respect to the axis of said stock, a blade having parallelsides, such a blade being located in each slot but not extending tothe bottom thereof and having a shoulder corresponding to and cooperating with the shoulderinf the slot, the inclination of the shoulderf the blade/with respect to the axisof the stock being the reverse of that of the shoulder of the slot, whereby each blade is supported longitudinally solely by the shoulder of its slot, means for securing each blade to said stock land means whereby the yblades may be simultaneously moved radially and longitudinally.

2.111 an adjustable reamer, a stock provided with longitudinal and radial slots having parallel walls, each slot having a longitudinally extending rectangular shoulder inclined with respect to the axis of saidv stock, a blade having parallel sides, vsuch a blade being located in each slot but not extending to the bottom thereof and having its forwardv cutting the forward end of said stockpeach blade having a shoulder corresponding to and cooperating with the shoulder of the slot, the inclination of the shoulder of the blade with respect to the longitudinal axis of the stock being Athe reverse of that of the shoulder of portion projecting beyond- :braise slot, means for securing each'blade to lsaid stock yand means whereby the blades may be simultaneously d'inally.

3. In an adjustable 'reamer, a stock 'provided with longitudinal and radial slots hav'- ng parallel walls, each slot having a longitudinally-extending rectangular shoulder inclined with respect to the axih of said stock,y a blade havinT parallel sides, uch a bladel being located 1n each slot but not extending to the bottom thereof and having a shoulder' corresponding to and coperating with the shoulder of the slot, the inclination of the shoulder' of the blade with respect to the longitudinal axis of the stock being the reverse of that of the shoulder ofthe, slot,

.moved radially and -longituf4 `whereby each blade is supported longitu said nut and the rear end of each blade and l engaging the corresponding beveled ends '0f -said blades, and means whereby the blades may be .simultaneously .moved radially and longitudinally.

4. In anl adjustable reamer, vided with longitudinal and radial slots having parallel walls, each slot having a longitudinally extending rectangular shoulder in- `clined with respect to the axis of said stock, a blade having parallel sides, such a blade being located in correspondingto and coperating with the shoulder ofthe'slot, the inclination of the shoulder of the blade with respect tothe longitudinal axis of the stock' being the reverse of that of the shoulder of the slot, whereby each blade is supported longitudinally solely by the shoulder of the slot, means for securing each blade to saidstock, said means comprising a screw threaded in a chamber in the front end of said stock and a beveled washer..interposed .between said screw and a correspondingly beveled portion' of the blades Anear the front ends thereof,-

said washer engaging of each blade. C o a 5. -In an adjustable reamer, a stock provided with longitudinal and radial slots having parallel walls, each slot having a longitudinally extending rectangular shoulder inclined with respect to the axis -of said stock, a blade having parallel sides, such a blade beinglocated in each slot but not extending to the bottom thereof and having a shoulder corresponding to and coperating'with the said beveled, portion shoulder of the slot, the inclination of the shoulder of the blade with respect to the longitudinal axis of the stock being thereverse of that of the shoulder of thei slot, whereby 'each "blade is supported longitudiav stock prol each slot but not extendingl -to the bottom thereof and having a shoulder nally solely by the shoulder of its slot, a lock-nut threaded on the rear .portion of the stock, a beveled collar interposed between said 'nut and the rear end of. each blade and engaging the correspondinglyT beveled ends of said blades, a screw threaded in a chamber in the front end' of said stock, and a beveled Washer interposed between said stock and a correspondlngly beveled portion of the blades near the front ends thereof, said washer engaging said beveled portions of each blade.

(3. In an adjustable reamer, a stock provided with longitudinal and radial slots, each slot having a longitudinally extending shoulder inclined with respect to the axis of said stock, a blade located in each slot but not extending to the bottom thereof and having a shoulder corresponding to and coperating with the shoulder of the slot, the inclination of the shoulder of the blade with respect to the longitudinal axis of the stock being the reverse of that of .the shoulder of lthe slot, whereby each blade is supported longitudinally solely by the shoulder of the slot, means for securing each blade to .said

stock, said means comprising a screw threadbeveled portion ed in a chamber in the front end of said Vstock and a beveled washer interposed besaid screw and a correspondingly ofthe blades near the front ends thereof, said washer' engaging said beveled portion of each blade and being counterbored to provide for increased adjustment in the gage of the reamer.

' 7 In an adjustable reanier, a blade havtween ing parallel sides and provided with a lon- 1909. n WILLIABI E. YORK.

GEORGE D. HAYDEN.

Witnesses FRED M. REID,

'WILLIAM T. READ. 

